Improvement in galvanic batteries



TATES Nrrs EDWIN J. FRASER, 'OF CHICAGO, ASSIGNCR TO HIMSELF AND E. W.

HAZARD, 0F GALESBURG, ILLINOIS.

IMPROVEMENT IN GALVANIC BATTERIES.

Specification forming part of Letters Patent No. 10,537, dated November 3, 1833.

To all whom it may concern:

Be it known that I, EDWIN J. FRASER, of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Galvanic Batteries; and I do hereby declare that the-following is a full,

clear, and exact description of the same, reference being had to the accompanying drawings, forming partof this specification, in which- Figure 1 is a central vertical section of a battery of one jar, constructed according to my invention. Fig. 2 is a top view of the same.

Similar letters of reference indicate corresponding parts in both figures.

This invention consistsin acertain construction of a galvanic battery, whereby the following advantages are obtained, viz: first, the jars are enabled to be hermetically sealed to prevent the evaporation of the solution'and the crystallization of the salts on the outside; second, provision is made for the removal of the zines without disturbing any other portions of the battery; and, third, a current is enabled to be kept up in a series of jars when one or more of the zines are removed.

To enable others skilled in the art to make and use my invention, I will proceed to describe it with reference to the drawings.

A is the jar, of glass or other non-conducting and imporous material, having fitted toits mouth a cap composed of a ring, a, of wood or other not too hard material, aring, b, of india-rubber or other soft material, and a ring, 0, of metal, riveted, screwed, or otherwise firmly secured together, with the india-rubber ring I) interposed between the other two. The internal circumferences of the rings a and c are alike and considerably smaller than the interior of the mouth of the jar, and the internal circumference of b is alittle smaller. The external circumference ofa is such that it fits easily within the mouth of the jar, but the external circumferences of b and e are larger, to form a flange to rest upon the mouth of the jar, with the india-rubber next the jar to form an air-tight packing. The central openingiu this cap is fitted with a close cover, C, to which is attached the zinc B, which is in the form of a hollow cylinder of an external circumference slightly smaller than the openings in the rings a and c, to allow it to passfreely through the said rings and fit snugly within the indiarubber ring b, which thus makes the cover C air-tight. The said cover consists simply of a circular plate of sufficiently larger circumference than the zinc B to give it a suitable bearing on the cap a b c'i'or the support of the zinc, and it is furnished with a ring-or other suitable handle, I), by which to lift it out and remove the zinc from the jar, when desirable.

E is a hollow cylinder, ofeopper or other negative metal, of a circumference considerably larger than the exterior of the zinc, but smaller than the interior of the jar, and resting either directly upon the bottom of the jar or upon suitable supports placed thereon. This cylinder has secured across its bottom a bar, d, of

similar metal, which supports a small central hollow cylinder, I which stands up within the zinc-cylinder. This cylinder is attached by a wire, a, to a screw-cup, f, on the cap of the jar, the said screw-cup and wire being insulated from the capand constituting the positive pole of the battery. The other pole of the battery oonsistsof ascrew-cup, g, which is secured to the metal ring cof the cap, which has a metallic connection with the zinc B by means of the cover C.

The insulated screwcupf has attached toit a metallic spring, h, which presses either against a metal stud, e, which is secured to the cap-plate c, or againstaspool-like sheath, j, of insulating material, which is fitted to turn on the said stud c, and which has an openin gin one side to permit the spring to press against the said stud." When the jar is in operation the spring rests against the sheath j, as shown in Fig. 2; but when it is desired to remove the zinc from the jar without disturbing other jars in the same battery, or iuterruptin g the operation of the battery, the sheath is turned to bring its opening opposite to the spring h, and allow the latter to come incontact with the stud i, and so permit the current to pass through the cap-plate 0 without passing into the jar, and the zinc may then be lifted out by the ring D of the cover C. When the cover C is in its place the ring b of the cap makes an air-tight joint between the cap and ring, as

2 geese? Well as between the cap and the mouth of the ii, applied in combination with each other and jar. with the metal ring 0 of the cap a b c, or its What I claim as my invention, and desire to equivalent, substantially as and for the pursecure by Letters Patent ispose herein specified.

1. The cap a b o and cover 0 in eombina- 7 tion with each other and with tliezine B and 1 EDWIN FRASER)" jar A, substantially as end. for the purpose Witnesses:

herein set forth W. O. GOUDY,

2. The stud t,insulating-sheathj,and spring WM. H. BRADLEY.

H. HALVORSON.

Shell.

WITNESSES.

N4 PETERS, FHOTD-LITHOGRAPHER, WASHINGTON, D C.

Patented Nov. 1863. 

